Timothy Warren, DO
NPI 1902435373 · Family Medicine Physician · Hummelstown, PA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Warren, DO is a Family Medicine Physician provider in Hummelstown, PA (NPI 1902435373).
Provider details
- NPI number
- 1902435373
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- OS021581 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
200 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 109 | $86 |
| X-Ray of Chest, 2 Views71046 | 57 | $32 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 18 | $106 |
| Automated Urinalysis Test81003 | 16 | $2 |
Typical Medicare-allowed amounts for these services range $2–$106 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methylprednisolone | 55 | 54 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 36 | 35 |
| Amoxicillin | 33 | 33 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 27 | 27 |
| Doxycycline Monohydrate | 27 | 27 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 17 | 17 |
| Cephalexin | 13 |
Practice location
Mailing address
Additional practice locations (2)
- 4300 Londonderry RdHarrisburg, PA 17109-5317Phone: (717) 576-0551
- 6481 Carlisle PikeMechanicsburg, PA 17050-2377Phone: (717) 796-9355Fax: (717) 620-8093
Registry dates
- Enumerated
- 2020-04-07
- Last updated
- 2025-04-07
- Certified
- 2025-04-07
Frequently asked questions
- What is Timothy Warren's NPI number?
- Timothy Warren's National Provider Identifier (NPI) is 1902435373, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Warren's specialty?
- Timothy Warren is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Warren located?
- Timothy Warren's practice location on file with NPPES is 300 E Main St, Hummelstown, PA 17036-1725.
- What is Timothy Warren's phone number?
- The practice phone number listed in the NPPES registry for Timothy Warren is (717) 566-1100.
- Does Timothy Warren accept Medicare?
- Timothy Warren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Warren's NPI active?
- Yes — Timothy Warren's NPI (1902435373) is active in the NPPES registry as of the last update on 2025-04-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.